2 years ago

What happens when atoms bond?

Chemistry

1 answer:

Marrrta [24]2 years ago

4 0

Answer: Atoms form chemical bonds to make their outer electron shells more stable.

Explanation:

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In the laboratory, a general chemistry student measured the pH of a 0.529 M aqueous solution of phenol (a weak acid), C6H5OH to

Artyom0805 [142]

Answer:

The dissociation constant of phenol from given information is $9.34\times 10^{-11}$ .

Explanation:

The measured pH of the solution = 5.153

$C_6H_5OH\rightarrow C_6H_5O^-+H^+$

Initially c

At eq'm c-x x x

The expression of dissociation constant is given as:

$K_a=\frac{[C_6H_5O^-][H^+]}{[C_6H_5OOH]}$

Concentration of phenoxide ions and hydrogen ions are equal to x.

$pH=-\log[x]$

$5.153=-\log[x]$

$x=7.03\times 10^{-6} M$

$K_a=\frac{x\times x}{(c-x)}=\frac{x^2}{(c-x)}=\frac{(7.03\times 10^{-6} M)^2}{ 0.529 M-7.03\times 10^{-6} M}$

$K_a=9.34\times 10^{-11}$

The dissociation constant of phenol from given information is $9.34\times 10^{-11}$ .

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2 years ago

How do you think the seasons would be different if Earth's axis was tilted more or less than it is?

ivann1987 [24]

Because the axis has changed

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3 years ago

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The kidneys play a major role in the urinary system. Which of these is NOT a function of the kidneys?

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WHAT IS THE MASS OF AN OBJECT WHOSE<br> DENSITY IS 0.23 G/ML AND A VOLUME OF<br> 22.5 ML?

7nadin3 [17]

Answer:

<h2>The answer is 5.18 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 22.5 mL

density = 0.23 g/mL

We have

mass = 0.23 × 22.5 = 5.175

We have the final answer as

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Answer:

First space: Corn oil

Second space: 2.50

Explanation:

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